<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box{
            margin: 100px;
            width: 200px;
            height: 100px;
            background-color: lavender;
            /* box-shadow: 0 5px 4px -4px black; */
            /* box-shadow: 3px 3px 6px -3px black; */
            box-shadow: 5px 0 5px -5px black,
            -5px 0 5px -5px black;
        }
    </style>
</head>
<body>
    <div class="box"></div>
</body>
</html>